print(3 == 3)  # 判断相等
print(3 != 3) # 判断不相等
print(3 > 2) # 判断 大于
print(3 < 2) # 判断 小于

print(3.0 ==3 )
print(True == False)

print('a' < 'b')  # true
print('ab' > 'b') # false

# 字符串的比较运算：每个字符的ascii码值
print('hello' < 'hell') # false
print(ord('a'))  # 97
print(ord('b'))  # 98